From: Michael J Gruber <git@drmicha.warpmail.net>
Date: Fri, 11 Feb 2011 15:04:43 GMT
Subject: Re: grep --no-index and pathspec
Message-ID: <4D55500B.1070603@drmicha.warpmail.net>
In-Reply-To: <20110211095938.360726y1zinab9gk@webmail.df.eu>

Lars Noschinski venit, vidit, dixit 11.02.2011 09:59:
> Hi everyone,
> 
> I encountered some strange behaviour with grep when using both the  
> --no-index option and a pathspec. Glob patterns seem to be ignored:
> 
> ----------
> $ git grep -l --no-index . -- '*.bib'
> paper.bib
> paper.tex
> ex1.tex
> ----------
> 
> But on the other hands, leading path matches work:
> ----------
> $ git grep -l --no-index . -- 'paper'
> paper.bib
> paper.tex
> ----------
> 
> Without the --no-index option, everything works fine:
> ----------
> $ git grep -l --no-index . -- '*.bib'
> paper.bib
> ----------
> 
> This is with git version 1.7.4, but I encountered it also with the  
> 1.7.2.3 Debian package.

"grep --no-index" and "grep" have different codepaths for looking up the
files/blobs. If I read that correctly then "grep --no-index -- pathspec"
only does a literal match at the left boundary, whereas for the normal
mode glob patterns are allowed.

CC'ing Junio who created "--no-index".

Michael